Tension release mechanism



Feb. l2, 1935. l E. TREMBLAY TENSION RELEASE MECHANISM Filed Nov. 4,195i 2 Sheets-Shea?l 1 l Inventor EQ2/0&5@ E' Bym;

Feb. 12, F935. E TREMBLAY 1,990,623

TENSION RELEASE MECHANISM Filed Nov. 4, 1931 2 Sheets-Sheet 2 j ifInventor /liorney Patented Feb. 119,35 i* y #TTT K.

UNITE-D;.STAT-s PATENT- 'oiificii 1j l V1,990,623 Y YYTiiNsioN,RiiliiiiisiiMiiciiANisii/i1v ,L l

, Euclide Tremblay, Iiawrence, Mass.

Application Nbvemberii, ieanseriaiNo. 573,614'

' 2 claims. Cifras-187i v f v Y I'his invention relates to an accessoryor ap- In order to maintain the finger 20 in contact purtenance for useon conventional looms, and with the crank arm 11 and to provide thedesired it has more specic reference to a structure which timed tensionrelease action, I provide a coiled is properly described as a tensionrelease mechspring 18', the same being secured as at 19 to the msnmpeculiarly bent portion 16 of the rocker 14. A 5 Brieiiy, the inventiveconception comprehends link 20 serves to anchor the spring to the leg 10the provision of a novel mechanism especially dethrough the. medium ofan attaching bracket 21. vised and constructed to release the tension onThe oscillatory actuator 14 is provided with aV shuttle when the pickeris ready to throw'desired tension producing means which is here theshuttle across. shown in the form of an arm 22 having a collar l0 Thepurpose of the invention is to provide an 23 adjustably secured by setscrews 24 on the automatically operable tension release mecharockershaft 15. Thus the armvmay be described nism designed to permit a loomto be run at high asa rocker arm, and its free end is bent into V- speedwithout burning pickers, saving on the shaped form as indicated at 25and the apex porpick motion, such as picker sticks, pickers, pick` tion26 thereof cci-operates with the hinged leaf 8 l5 rolls, and shoes, andotherwise fullling the rewhich in turn bears against the adjacentshuttle. quirements of the mechanism of this class in a Each leaf orbinder 8 has a plate 8 attached highly satisfactory manner. theretowhich is engaged by the portion 26 of the In the drawings: arm 22, asshown in Figures 1 and 3, and these Figure 1 is a front elevational viewof the lay plates partly bridge the spaces between the leaves 20 of aconventional 100m With the Oscillatory terlor binders 8. As is wellknown, the shuttle enters sion releasel mechanism 21111311611 theretotheshuttlebox on the forward motion of the lay, Figure 1S an end YeW 0fFlgllle 1 ObSeTVlIlg the and the box moves up or down also at this time,assembly in a direction from right to left. so that by having the plateson the binders, the

Figure 3 is a Vertical Sctional View showing the finger 22 rides onthese plates while the box is be- 25 Co'peraton of the sprmgpressedtenslon' pro' ing'shifted and thus the pressure of the iinger duC1-ngngr th ,E remains on the binder longer, giving the shuttle abgreqelfragmentary new of e adlus time to set before the finger leaves thebinder.

. The idea is to have pressure on the binder as 30 *Flgur'e 5 1S aperspectwe new of' the Oscluatory long as is possible before the shuttleis ready to be actuator for the rocker arm. g

In therdrawings the conventional 100m laygsV thrown across the loom, atwhich time all the vdesignated by the numeral 6, and the shuttle boxesPressure ifs take@ Off; bythe numeral '7. The numerals 8 designate theThe Splmg actlfm 1S apphed t0 the bent DOTT/1011 customary hingedlymounted leaves co-operable 0f th? QSCllfOlfY atllatoro that the nger 20iS with the shuttles 9. The lay sword or leg is inmaintained in contactwith the crank arm 11 dicated by the numeral 10, and the crank arm byand the hooked end of the rocker arm is pressed the numeral 11 (seeFigure 2). yieldably against the adjacent leaf or plate 8.

The attachment COIIIPISGS a pail' 0f brackets The mechanismis-applicable to each end of the 40 12 PTOVded With bearing eyes 13thesebeing Suit loom and provides the desired timed yieldable 40 ablyfastenedtO the 1915- These bearmgs Senf@ regulation of the tension tothe shuttle but when to accommodate the oscillatory actuator1 14. Thisthe Crank arm 11 moves upwardly in rocking the actuators fprmedfromasmgle rodpavtngahon' lay forwardly the engagement of the arm 20 byZonta'l portlon 15 mounted for oscluatl'on m the the crank arm 11 willmove the member 14 to bearings 13 and constituting a rccicler shlafmttheCause a rocking motion of the part 15 in the intermediate portion ofsaid ro eing en as u indicated at 16 to `underlie the shuttle box, andbearmg 13 so that the lge* 22 1S swung out the Opposite end portion ofthe rod being fash wardly to release the tension from the leaf 8 soioned as indicated at 17 to provide an actuating tl; pll's Stklrhletskllteesfr m. Y 2 y arThere is a xture on the upper end of this arm ofthis attachment on the loom permits the latter comprising a sleeve 18attached by a set screw 19 t0 be T1111 at hg'h Speed llllthOllt10111111118 the plckand said sleeve is provided with a iinger 20 coop-BTS @11d 1110011101118 1101110821016 SaVlIlg 111 the P10K erable inproper timed relation with the crank m0121011.

arm 11. y It is thought from the foregoing description 55 that theadvantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction andin the combination and arrangement of the several parts provided thatsuch changes fall4 within the scope of the appended claims.

I claim:

1. An attachment for a loom, said loom comprising a crank arm, a laysword a shuttle binder and a shuttle box, said attachment comprisingbracket means attachable to said loom, a rocker shaft mounted for'oscillation in said bracket means, means carried by said rocker shaftfor cooperation with said crank arm, a rocker arm carried by said rockershaft and cooperable with said shuttle binder of said' shuttle box,spring means cooperable with said rocker shaft and attachable to saidlay sword to maintain said arm in yieldable operative position, and aplate attached to said shuttle binder and engaged by a part of saidrocker arm and on which said partv of said rocker arm rides while saidshuttle box is being shifted.

2. An attachment for a loom, said loom comprising a crank arm a laysword and a shuttle box, said attachment comprising bracket meansattachable to said loom, a rod member mounted for oscillation in saidbracket means and so formed between its ends as to form a rocker shaftand an upstanding trip member, a bracket on the upper portion of saidtrip member including-a finger cooperable with said crank arm, a springattached to the intermediate portion of said rod member and having meansfor anchorage-to said lay sword, and a rocker arm secured to said rockershaft having its upper portion offset and cooperable with said shuttlebox.

EUCLIDE TREMBLAY`

